Trypethelium luteolucidum

Last updated

Trypethelium luteolucidum
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Fungi
Division: Ascomycota
Class: Dothideomycetes
Order: Trypetheliales
Family: Trypetheliaceae
Genus: Trypethelium
Species:
T. luteolucidum
Binomial name
Trypethelium luteolucidum
Aptroot, Mendonça & M.Cáceres (2016)

Trypethelium luteolucidum is a species of lichen in the family Trypetheliaceae, [1] first formally described in 2016. Found in Brazil and Mexico, it is similar to Trypethelium regnellii , but differs by the presence of anthraquinone crystals in the pseudostromata .

Contents

Taxonomy

Trypethelium luteolucidum was formally described by the lichenologists André Aptroot, Cléverton de Oliveira Mendonça, and Marcela Eugenia da Silva Cáceres in 2016. The type specimen was collected in Porto Velho, Rondônia, Brazil, at an elevation of about 100 m (330 ft), on the bark of Hevea brasiliensis in a plantation. [2]

Description

The thallus of Trypethelium luteolucidum is corticate , smooth to somewhat bullate , somewhat shiny, continuous, covering areas up to 10 cm in diameter and approximately 0.2 mm thick. The thallus is ochraceous in colour, not surrounded by a prothallus , and does not induce gall formation on the host bark. Ascomata are spherical, measuring 0.4–0.7 mm in diameter, mostly aggregated in groups of 2–7, and emergent from the thallus in pseudostromata with a decorticated upper surface different from the thallus. Pseudostromata are distinctly raised above the thallus, irregular in outline, sides almost vertical, up to 5 mm in diameter and 1 mm high, and the same colour as the thallus. The upper surface is whitish pruinose or grey to blackish due to the emergent ascomata, and contains crystals inside. The wall is carbonized and up to 60 μm thick. Ostioles are apical, not fused, flat, and brown. The hamathecium is inspersed with hyaline oil globules. Asci contain eight ascospores each. Ascospores are hyaline, contain between 11 and 21 septa, and have a long fusiform shape. They measure 60–110 by 12–15 μm, have rounded ends and diamond-shaped lumina , and are surrounded by a gelatinous layer up to 2 μm thick. Pycnidia were not observed to occur in this species. [2]

The thallus surface of Trypethelium luteolucidum is mostly UV+ (yellow), and the medulla is K−. The pseudostroma is UV+ (yellow), and the crystals react K+ (yellow to red). Thin-layer chromatography analysis reveals the presence of lichexanthone and an unidentified anthraquinone. [2]

Habitat and distribution

This species is found on the smooth bark of trees in rainforests and is known from Brazil and Mexico. [2]

Related Research Articles

Astrothelium aeneoides is a species of corticolous (bark-dwelling), crustose lichen in the family Trypetheliaceae. It is found in Brazil, Guyana, and Puerto Rico, where it grows on the smooth bark of rainforest trees.

Astrothelium stromatofluorescens is a species of corticolous (bark-dwelling) lichen in the family Trypetheliaceae. It is only known to occur in a few locations in Brazil and Bolivia.

Astrothelium sinuosum is a species of corticolous (bark-dwelling), crustose lichen in the family Trypetheliaceae. Found in Brazil, it was formally described as a new species in 2016 by André Aptroot and Emerson Gumboski. The type specimen was collected by the second author from the Rio Pardinho e Rio Vermelho Environmental Protection Area ; there, in an Atlantic Forest habitat, it was found growing on smooth tree bark.

Astrothelium pictum is a species of corticolous (bark-dwelling), crustose lichen in the family Trypetheliaceae. Found in Brazil, it was formally described as a new species in 2016 by Dutch lichenologist André Aptroot. The type specimen was collected by the author from the Reserva Particular do Patrimônio Natural Santuário Caraça at an altitude of 1,300 m (4,300 ft); there, in an Atlantic Forest habitat, it was found growing on smooth tree bark.

Astrothelium mesoduplex is a species of lichen in the family Trypetheliaceae. It is similar to A. flavoduplex but has larger ascospores and lacks lichexanthone. This lichen species has been found only in Brazil, particularly in primary forests.

Astrothelium nigrum is a species of corticolous (bark-dwelling) lichen in the family Trypetheliaceae. It is characterized by its conical black pseudostromata, which contrast sharply with the thallus. This lichen species has been found only in Brazil and is unique in its appearance, superficially resembling a Pyrenula species.

Astrothelium solitarium is a species of corticolous (bark-dwelling) in the family Trypetheliaceae. Found in Brazil, it was formally described as a new species in 2016 by lichenologists André Aptroot and Marcela Cáceres. The species is closely related to Astrothelium ceratinum but differs in its ascospore size.

Astrothelium supraclandestinum is a species of lichen in the family Trypetheliaceae. This lichen species is closely related to Astrothelium subclandestinum, but differs in its hamathecium, which is not inspersed. The species is widespread and has been observed in several countries across different continents.

Viridothelium leptoseptatum is a species of corticolous (bark-dwelling), crustose lichen in the family Trypetheliaceae, first described in 2016. Found in Brazil, it resembles Astrothelium aeneum but differs in several key aspects, including the absence of pigment on the thallus and specific features of its ascospores.

Polymeridium longiflavens is a species of corticolous (bark-dwelling) crustose lichen in the family Trypetheliaceae, first described in 2016. It is found in Brazil.

Polymeridium endoflavens is a species of lichen in the family Trypetheliaceae, first described in 2016. This species is found in Brazil.

Astrothelium tetrasporum is a species of corticolous (bark-dwelling), crustose lichen in the family Trypetheliaceae, first described in 2016. It is found in Brazil.

Astrothelium simplex is a species of corticolous (bark-dwelling), crustose lichen in the family Trypetheliaceae, first described in 2016. It is found in the Atlantic Forest of Brazil.

Astrothelium rubrocrystallinum is a species of corticolous (bark-dwelling), crustose lichen in the family Trypetheliaceae, first described in 2016. It is found in Brazil.

Astrothelium megeustomum is a species of corticolous (bark-dwelling), crustose lichen in the family Trypetheliaceae, first scientifically described in 2016. It is found in Brazil.

Astrothelium macrostomum is a species of corticolous (bark-dwelling), crustose lichen in the family Trypetheliaceae. It is found in Brazil, Guyana, and Venezuela.

Astrothelium longisporum is a species of corticolous (bark-dwelling), crustose lichen in the family Trypetheliaceae. It occurs in the Atlantic Forest of Brazil.

Astrothelium graphicum is a species of lichen in the family Trypetheliaceae. This lichen features an extended, reticulate pseudostroma that is lower than its slightly bullate thallus.

Astrothelium globosum is a species of lichen in the family Trypetheliaceae. This species is characterised by its immersed ascomata and a thallus consisting of nearly spherical warts, along with distinctive 3-septate ascospores.

Astrothelium curvatum is a species of corticolous lichen in the family Trypetheliaceae. Found in Brazil, it was described as a new species in 2016. It is characterised by its immersed pyriform ascomata with lateral ostioles and bent, muriform ascospores.

References

  1. ↑ "Trypethelium luteolucidum Aptroot, C. Mendonça & M. Cáceres". Catalogue of Life . Species 2000: Leiden, the Netherlands. Retrieved 22 December 2023.
  2. 1 2 3 4 Aptroot, André; Mendonça, Cléverton de Oliveira; Andrade, Danyelly Santos; Silva, Jeanne dos Reis; Martins, Suzana Maria de Azevedo; Gumboski, Emerson; Fraga, Carlos Augusto Vidigal; Cáceres, Marcela Eugenia da Silva (2016). "New Trypetheliaceae from northern and southern Atlantic rainforests in Brazil". The Lichenologist. 48 (6): 713–725. doi: 10.1017/s0024282916000037 .
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.